FOOD SCIENCE AND HUMAN NUTRITION

Nutrition is a science, a field of knowledge composed of organized facts. The study includes in areas, such as clinical nutrition, community nutrition, public health and food policy and food science. Nutrition too is a science of how the body use food. Nutrition is life. The science of nutrition helps us improve our food choices by identifying the amounts of nutrients we need, the best food sources of those nutrients, and the other components in foods that may be helpful or harmful.

Wednesday, April 25, 2018

Vitamin E deficiency is rare. In the United States, deficiency is limited primarily to people with an inborn deficiency of alpha-TTP and to those who have fat malabsorption syndromes, and hence cannot absorb fat-soluble vitamins.

Malabsorption syndromes that prevent the proper absorption of nutrients can cause vitamin K deficiencies. Malabsorption is the inability to absorb dietary food. Mucosal barrier to absorption: disease of small intestine. Malabsorption constitutes the pathological interference with the normal physiological sequence of digestion (intraluminal process), absorption (mucosal process) and transport (postmucosal events) of nutrients.

Vitamin K deficiency is seen in patients with malabsorption syndromes such as pancreatitis, short bowel syndrome, sprue, or small bowel states of bacterial overgrowth such as sometimes accompany use of broad-spectrum antibiotics. It also can be seen in patients with extremely poor dietary intake of green leafy vegetables.

Vitamin K is fat-soluble and therefore requires bile salts for absorption from the jejunum. Biliary obstruction, malabsorption syndromes, gastrointestinal obstruction, or rapid gastrointestinal transit can result in vitamin K deficiency because of inadequate absorption.Malabsorption syndromes can cause vitamin K deficiencies